35 lines
667 B
Python
35 lines
667 B
Python
class Point:
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def __init__(self, x, y, z):
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self.x = x
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self.y = y
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self.z = z
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def __sub__(self, o):
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return Point(self.x - o.x, self.y - o.y, self.z - o.z)
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def __str__(self):
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return f"({self.x}, {self.y}, {self.z})"
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def cross(self, o):
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x = self.y * o.z - self.z * o.y
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y = self.z * o.x - self.x * o.z
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z = self.x * o.y - self.y * o.x
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return Point(x, y, z)
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p0 = Point(1, 1, 0)
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p1 = Point(0, 1, 1)
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p2 = Point(1, 0, 1)
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e1 = p1 - p0
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print(e1)
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e2 = p2 - p0
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print(e2)
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n = e1.cross(e2)
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print(n)
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# Find A, B, C and D
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D = -(n.x * p0.x + n.y * p0.y + n.z * p0.z)
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print(n.x, n.y, n.z, D)
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